CN108861914B - Automatic leveling structure of lifting operation platform - Google Patents
Automatic leveling structure of lifting operation platform Download PDFInfo
- Publication number
- CN108861914B CN108861914B CN201811033095.1A CN201811033095A CN108861914B CN 108861914 B CN108861914 B CN 108861914B CN 201811033095 A CN201811033095 A CN 201811033095A CN 108861914 B CN108861914 B CN 108861914B
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- bearing platform
- lifting
- platform
- oil
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- 238000012544 monitoring process Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims 9
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000012937 correction Methods 0.000 abstract description 7
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
- B66B1/40—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings
Abstract
The invention relates to an automatic leveling structure of a lifting operation platform, which regulates the level difference between a bearing platform and a layer surface in the process of stopping the bearing platform for loading or unloading by lifting movement of a lifting system, wherein the lifting system is provided with a plurality of groups of power sources, the automatic leveling structure comprises a travel monitoring system capable of monitoring the position of the bearing platform in real time and a PLC (programmable logic controller) controller which feeds back information according to the travel monitoring system and gives lifting instructions to the lifting system, the PLC controller is communicated with each group of power sources, when the bearing platform stops, only one group of power sources is in a working state under the control of the PLC controller, the travel monitoring system allows the level difference to be less than or equal to 9mm, and when the level difference is greater than 9mm, the corresponding group of power sources work, and the bearing platform lifts and corrects the level difference. The invention can enable the bearing platform to be relatively stable and close to the height of the layer surface to realize flat layer, and simultaneously the correction process is relatively stable, so that strong shaking feeling can not be generated, and the probability of collision between cargoes is reduced.
Description
Technical Field
The invention belongs to the field of lifting operation platforms, and particularly relates to an automatic leveling structure of a lifting operation platform.
Background
Lifting work platforms are widely known for the transfer of goods, for example: the goods position conversion between two floors, although the final purpose is the same as the effect of adopting goods lift conversion, but the cost is lower than that of adopting lifting operation platform and goods lift, also very convenient on-the-spot installation.
At present, in the motion process of a lifting operation platform, particularly after a bearing platform stops a layer, when loading in the platform or unloading from the platform, the bearing platform floats in the up-down direction of a layer, and in order to reduce the motion amplitude of the bearing platform, a hydraulic cylinder is automatically pressurized or depressurized to correct a leveling layer, so that the risk of side turning of goods caused by overlarge layer difference can be avoided.
As for the correction principle, most of the correction principle adopts a sensor positioned near a landing door and a receiver arranged on a bearing platform, specifically, a correction interval is formed by the sensor, and when the position of the receiver exceeds the correction interval, the lifting mechanism is regulated to lift so as to carry out no difference, so that the bearing platform can correct the motion within a normal range (the correction precision is +/-20 mm according to GB 4588-2003).
However, in the leveling process, once the sensor or the receiver fails and other accidents occur, automatic leveling cannot be achieved, and meanwhile, the defect is that the lifting mechanism performs lifting adjustment in a range of intervals during compensation, but the specific adjustment is highly accurate, and a situation easily occurs: the load-bearing platform is not stable due to the fact that the load-bearing platform is always in a lifting state, and therefore collision among cargoes (particularly fragile products) can be caused.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing an improved automatic leveling structure of a lifting operation platform, which is used for adjusting the lifting of an oil cylinder relatively smoothly according to the real-time monitoring position of a bearing platform so that the bearing platform is relatively smooth and close to the height of a layer surface to realize leveling.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides an automatic leveling structure of lift operation platform, it is through the lift motion of operating platform adjusts the bearing platform and stops the layer and load or the layer size between the landing platform and the aspect in unloading, operating system has multiunit power supply, automatic leveling structure includes the journey monitored control system that can real-time supervision bearing platform is located, according to the information that journey monitored control system fed back and give the PLC controller of lift instruction to operating system, wherein the PLC controller is linked together with every group power supply, when bearing platform stops the layer, multiunit power supply only has a set of operating condition under the PLC controller control, the travel monitored control system allows the layer to be less than or equal to 9mm, when the layer is greater than 9mm, the power supply work of corresponding group, bearing platform goes up and down and mends the layer is poor.
Preferably, the travel monitoring system comprises an annular data belt which is arranged along the height direction of the lifting operation platform and can synchronously move with the bearing platform, driving wheels which are positioned at two ends of the annular data belt, and an encoder which is in butt joint with one of the driving wheels, wherein the encoder is communicated with the PLC.
According to a specific implementation and preferred aspect of the invention, the driving wheel is a gear, the annular data belt is a chain matched with the gear, wherein the encoder takes a tooth pitch as a log reference, and when the sum of a plurality of log references is larger than 9mm, the bearing platform is lifted and corrected for the level difference. The belt pulley slipping is prevented from occurring, the log deviation is caused, and the log deviation cannot be controlled in a reasonable layer difference range.
Preferably, the trip monitoring system further comprises a link for synchronously connecting the load carrying platform with the annular data band. When the bearing platform moves, the two are synchronous by the butt joint of the connecting rods.
Further, the bearing platform is provided with baffle plates at two opposite sides of the inlet and the outlet, the travel monitoring system is positioned at one side of the bearing platform, and the connecting rod is in butt joint with the corresponding side baffle plates.
According to still another specific implementation and preferred aspect of the present invention, the lifting system includes a hydraulic cylinder, a transmission member for transmitting and connecting the hydraulic cylinder with the carrying platform, a plurality of oil paths for supplying or discharging oil to or from the hydraulic cylinder, solenoid valves provided on each of the oil paths, and an oil pump, wherein each of the oil paths and the solenoid valves provided correspondingly form a power source, and the solenoid valves and the oil pump are respectively communicated with the PLC controller.
In this example, the relative lifting of the hydraulic cylinder is realized by oil supply and oil discharge, and the capability of instantaneous pressurization or pressure relief is relatively weak under the action of a group of power.
Specifically, guide rails are respectively arranged on two opposite sides of the bearing platform, and the transmission piece comprises a sliding seat which is arranged between the two guide rails on the same side in a sliding way; a transfer wheel arranged on the slide seat and rotating around the horizontal direction; one end is fixed on the platform bracket, the other end bypasses the conveying wheel and downwards extends from the conveying wheel to be connected with the conveying belt on the bearing platform, wherein the upper end of the hydraulic cylinder is connected with the sliding seat, the sliding seat moves up and down along the guide rail due to the expansion and contraction of the hydraulic cylinder, the conveying belt drives the connecting part connected with the bearing platform to become shorter or longer along with the up-and-down movement of the conveying wheel, when the connecting part becomes longer, the bearing platform is in a descending process, and conversely, when the connecting part becomes shorter, the bearing platform is in an ascending process.
In this example, the transfer wheel is a sprocket and the conveyor belt is a drive chain.
In addition, the hydraulic cylinder and the power source form a lifting assembly, and the lifting system is provided with two lifting assemblies which are symmetrically arranged on two opposite sides of the bearing platform.
Preferably, the power sources on both sides synchronously supply or discharge oil, and the oil flow is the same. So that synchronization is ensured.
Of course, as for the arrangement of the oil pump, the two lifting assemblies can be used in common, that is, the plurality of power sources are communicated with each other in a one-to-one correspondence manner; or each lifting assembly is independently controlled by using an oil pump, but the oil quantity is regulated according to the instruction of the PLC controller.
Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:
According to the invention, on one hand, according to the position of the real-time monitoring of the bearing platform, the lifting of the oil cylinder is regulated relatively gently, so that the bearing platform is relatively smooth and close to the height of the layer surface to realize leveling; on the other hand, through a set of work in the multiunit power supply for when surpassing setting for layer difference 9mm, load-bearing platform's lift correction process is steady relatively, can not produce strong shaking sensation, also reduces the probability of collision between the goods simultaneously.
Drawings
FIG. 1 is a schematic view of a self-leveling structure according to the present invention;
fig. 2 is a wire rope trend schematic of the sheave assembly of fig. 1 (one wire rope indicated by a dashed line and the other wire rope indicated by a solid line);
wherein: 1. a lifting system; 1a, a power source; 10. a hydraulic cylinder; 11. a transmission member; 110. a slide; 111. a transfer wheel; 112. a conveyor belt; 113. balance rope pulley knots; 113a, rope pulleys; 113b, a steel wire rope; 12. an oil path; 13. an electromagnetic valve; 2. a load-bearing platform; 21. a breast board; 3. A layer surface; 4. a travel monitoring system; 40. an annular data band; 41. a driving wheel; 42. an encoder; 43. a connecting rod; 5. a PLC controller; 6. and a guide rail.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1, the automatic leveling structure of the lifting and lowering operation platform in this embodiment adjusts the level difference between the bearing platform 2 and the layer 3 in the process of stopping and loading or unloading the bearing platform 2 through the lifting movement of the lifting system 1, the lifting system 1 is provided with a plurality of groups of power sources 1a, the automatic leveling structure comprises a travel monitoring system 4 capable of monitoring the position of the bearing platform 2 in real time, and a PLC controller 5 for sending lifting instructions to the lifting system 1 according to the information fed back by the travel monitoring system 4, wherein the PLC controller 5 is communicated with each group of power sources 1a, when the bearing platform 2 stops, only one group of power sources 1a is in a working state under the control of the PLC controller 5, the travel monitoring system 4 allows the level difference to be less than or equal to 9mm, and when the level difference is greater than 9mm, the corresponding group of power sources 1a work, and the bearing platform 4 lifts the level difference.
Specifically, the travel monitoring system 4 includes an annular data belt 40 disposed along the height direction of the lifting platform and capable of moving synchronously with the carrying platform 2, driving wheels 41 located at two ends of the annular data belt 40, and an encoder 42 abutted with one of the driving wheels 41, wherein the encoder 42 is communicated with the PLC controller 5.
In this example, the driving wheel 41 is a gear, the annular data belt 40 is a chain matched with the gear, wherein the encoder 42 takes a tooth pitch as a log reference, and when the sum of a plurality of log references is greater than 9mm, the carrying platform 2 is lifted to correct the layer difference. The belt pulley slipping is prevented from occurring, the log deviation is caused, and the log deviation cannot be controlled in a reasonable layer difference range.
The travel monitoring system 4 is located at one side of the carrying platform 2, and in order to achieve synchronization of the annular data band, in this example, the carrying platform 2 is provided with a baffle 21 at two opposite sides of the inlet and outlet, and the travel monitoring system further comprises a connecting rod 43 for synchronously connecting the baffle 21 of the carrying platform with the annular data band 40. When the bearing platform 2 moves, the two are in butt joint by the connecting rod 43 to realize the synchronization.
Then, the lifting system 1 includes a hydraulic cylinder 10, a transmission member 11 for transmitting and connecting the hydraulic cylinder 10 with the carrying platform 2, a plurality of oil passages 12 for supplying or discharging oil to or from the hydraulic cylinder 10, solenoid valves 13 provided on each of the oil passages 12, and an oil pump, wherein each of the oil passages 12 and the solenoid valve 13 provided correspondingly constitute a power source 1a, and the solenoid valves 13 and the oil pump are respectively communicated with the PLC controller 5. In this example, the relative lifting of the hydraulic cylinder is realized by oil supply and oil discharge, and the capability of instantaneous pressurization or pressure relief is relatively weak under the action of a group of power.
As for the transmission member 11, in this example, the guide rails 6 are respectively disposed on opposite sides of the carrying platform 2, and the transmission member 11 includes a slide seat 110 slidably disposed between the two guide rails 6 on the same side; a transfer wheel 111 provided on the slider 110 to rotate around a horizontal direction; one end part is fixed on the platform bracket, the other end part bypasses the conveying wheel 111 and extends downwards from the conveying wheel 111 to be connected with a conveying belt 112 on the bearing platform 2, wherein the upper end part of the hydraulic cylinder 10 is connected with the sliding seat 110, the sliding seat 110 moves up and down along the guide rail 6 by the extension and contraction of the hydraulic cylinder 10, the conveying belt 112 drives a connecting part connected with the bearing platform 2 to shorten or lengthen along with the up and down movement of the conveying wheel 111, when the connecting part lengthens, the bearing platform is in a descending process, and conversely, when the connecting part lengthens, the bearing platform is in an ascending process.
Specifically, the conveying wheel 111 is a sprocket, and the conveying belt 112 is a transmission chain. So that the carrying platform 2 is more stable in the up-and-down movement process.
In this example, the transfer wheel 111 and the transfer belt 112 are respectively provided in two groups, and are symmetrically disposed on opposite sides of the hydraulic cylinder 10.
Meanwhile, the transmission member 11 further comprises a rope pulley assembly 113 capable of synchronously conveying the sliding seat 110, the rope pulley assembly 113 is arranged to improve lifting stability of the bearing platform 2, and specifically, fixed pulleys 113a and wound steel wire ropes 113b are respectively arranged at the top and the bottom of the lifting operation platform.
Specifically, as shown in fig. 2, two steel wires 113b are combined, one steel wire 113b passes through the fixed pulley 113a at the top and the fixed pulley 113a at the bottom from the upper part of one sliding seat 110, then passes through the fixed pulley 113a at the bottom of the other side from the bottom of the carrying platform 2, extends upwards and is butted with the bottom of the other sliding seat 110; the other wire rope 113b passes through the fixed pulley 113a at the bottom of one sliding seat 110, passes through the fixed pulley 113a at the bottom of the other side, passes through the fixed pulley 113a at the top of the other side, passes through the fixed pulley 113a at the bottom of the other side, and then passes through the fixed pulley 113 a.
In this example, four wire ropes 113b are used, which are symmetrically disposed on opposite sides of the hydraulic cylinder 10.
In this case, the above-described arrangement of the pulley assembly S brings about an aligned arrangement of the two carriages 110 on both sides, so that a synchronous lifting movement is achieved.
In addition, the hydraulic cylinder 10 and the power source 1a form a lifting assembly, and the lifting system is provided with two lifting assemblies and is symmetrically arranged on two opposite sides of the bearing platform 2.
The power sources 1a positioned at the two sides synchronously supply or discharge oil, and the oil flow is the same. So that synchronization is ensured.
Of course, as for the arrangement of the oil pump, the two lifting assemblies can be used in common, that is, the plurality of power sources are communicated with each other in a one-to-one correspondence manner; or each lifting assembly is independently controlled by using an oil pump, but the oil quantity is regulated according to the instruction of the PLC controller.
In addition, the load platform is further provided with a weighing device, especially when the load is loaded, once the weight of the load exceeds the limit bearing capacity, the PLC 5 stops the operation of the operation platform, and information such as overload and the like is displayed in an alarm mode and fed back to a user, so that the use safety is further improved.
In summary, the automatic leveling process of the present embodiment is as follows:
After the bearing platform 2 moves to the corresponding landing door, the upper surface of the bearing platform 2 is flush with the upper surface (layer 3) of the landing door, then when the bearing platform 2 is loaded or unloaded, the bearing platform 2 sinks or floats upwards along with the weight change of the goods, at the moment, the encoder starts to count a trip, and when the sinking or floating distance is greater than 9mm, the PLC controller 5 controls two paths of power sources on two sides to synchronously supply oil or unload oil to the hydraulic cylinder 10 at the same flow rate, so that the compensating landing difference is carried out with relatively small amplitude.
The present invention has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (5)
1. The utility model provides an automatic flat layer structure of lift work platform, its lift motion through operating system adjusts loading platform stop layer loading or the landing between loading platform and the aspect is poor size, its characterized in that: the lifting system is provided with a plurality of groups of power sources, the lifting system comprises a hydraulic cylinder, a transmission part, a plurality of oil ways and electromagnetic valves, the transmission part is used for transmitting and connecting the hydraulic cylinder with the bearing platform, the plurality of oil ways are used for supplying or discharging oil to the hydraulic cylinder, the electromagnetic valves are arranged on each oil way, the automatic leveling structure comprises a travel monitoring system capable of monitoring the position of the bearing platform in real time, a PLC controller is used for feeding back information according to the travel monitoring system and giving a lifting instruction to the lifting system, each oil way and the electromagnetic valve which are correspondingly arranged form a power source, and an oil pump, each group of the electromagnetic valves and the oil pump of the power source are respectively communicated with the PLC controller, when the bearing platform stops, only one group of the power sources is in a working state under the control of the PLC controller, the travel monitoring system allows the layer difference to be less than or equal to 9mm, when the layer difference is greater than 9mm, the corresponding group of power sources work, and the bearing platform is corrected; guide rails are respectively arranged on two opposite sides of the bearing platform, and the transmission piece comprises a sliding seat which is arranged between the two guide rails on the same side in a sliding way; a transfer wheel arranged on the slide seat and rotating around the horizontal direction; one end part is fixed on the platform bracket, and the other end part bypasses the conveying wheel and extends downwards from the conveying wheel to be connected with the conveying belt on the bearing platform; the rope wheel assembly comprises fixed pulleys and two wound steel wire ropes, wherein the fixed pulleys are respectively arranged at the top and the bottom of the lifting operation platform, one steel wire rope bypasses the fixed pulley at the top and the fixed pulley at the bottom of one sliding seat, and then penetrates through the fixed pulley bypassing the bottom of the other side from the bottom of the bearing platform to extend upwards to be butted with the bottom of the other sliding seat; the other steel wire rope passes through the fixed pulley which passes through the bottom of one sliding seat from the bottom of the sliding seat, passes through the fixed pulley which passes through the bottom of the other side from the bottom of the bearing platform, upwards passes through the fixed pulley which passes through the top of the other side from the bottom of the bearing platform, downwards extends and is connected to the top of the other sliding seat; the travel monitoring system comprises an annular data belt which is arranged along the height direction of the lifting operation platform and can synchronously move with the bearing platform, driving wheels which are positioned at two ends of the annular data belt, and encoders which are in butt joint with one of the driving wheels, wherein the encoders are communicated with the PLC, the driving wheels are gears, the annular data belt is a chain matched with the gears, one tooth pitch is used as a log reference by the encoder, and when the sum of the log references is more than 9mm, the bearing platform lifts and corrects the layer difference; the travel monitoring system further comprises a connecting rod for synchronously connecting the bearing platform with the annular data belt; the bearing platform is provided with baffle plates at two opposite sides of the inlet and the outlet, the travel monitoring system is positioned at one side of the bearing platform, and the connecting rod is in butt joint with the baffle plates at the corresponding side.
2. The automatic leveling structure of a lifting work platform as claimed in claim 1, wherein: the upper end of the hydraulic cylinder is connected to the sliding seat, the sliding seat moves up and down along the guide rail due to the expansion and contraction of the hydraulic cylinder, the conveyor belt moves up and down along with the conveying wheel to drive the connecting part connected with the bearing platform to be shortened or lengthened, when the connecting part is lengthened, the bearing platform is in a descending process, and otherwise, when the connecting part is shortened, the bearing platform is in an ascending process.
3. The automatic leveling structure of a lifting work platform according to claim 2, wherein: the conveying wheel is a chain wheel, and the conveying belt is a transmission chain.
4. The automatic leveling structure of a lifting work platform as claimed in claim 1, wherein: the hydraulic oil cylinder and the power source form a lifting assembly, and the lifting system is provided with two lifting assemblies and is symmetrically arranged on two opposite sides of the bearing platform.
5. The automatic leveling structure of a lifting work platform as recited in claim 4, wherein: the power sources are positioned at the two sides for synchronously supplying or discharging oil, and the oil flow is the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033095.1A CN108861914B (en) | 2018-09-05 | 2018-09-05 | Automatic leveling structure of lifting operation platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033095.1A CN108861914B (en) | 2018-09-05 | 2018-09-05 | Automatic leveling structure of lifting operation platform |
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| CN108861914A CN108861914A (en) | 2018-11-23 |
| CN108861914B true CN108861914B (en) | 2024-04-23 |
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| CN201811033095.1A Active CN108861914B (en) | 2018-09-05 | 2018-09-05 | Automatic leveling structure of lifting operation platform |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108821046B (en) * | 2018-09-05 | 2024-04-19 | 苏州市康鼎升降机械有限公司 | Guide rail type lifting operation platform |
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| CN208684173U (en) * | 2018-09-05 | 2019-04-02 | 苏州市康鼎升降机械有限公司 | The automatic leveling structure of lift work platform |
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2018
- 2018-09-05 CN CN201811033095.1A patent/CN108861914B/en active Active
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|---|---|---|---|---|
| CN2153539Y (en) * | 1993-02-18 | 1994-01-19 | 呼延亮 | Hydraulic double cylinder hoist |
| CN1418170A (en) * | 2000-03-16 | 2003-05-14 | 奥蒂斯电梯公司 | Leveling system for elevator |
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| CN108861914A (en) | 2018-11-23 |
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